Improvement in machines for separating magnetic-iron ores from other substances



j. Y. SMITH.

Separating Magnetic Ores.

Pfitentd Nqv. 15, 1870.

burg,'i'n.the county of Allegheny and State of Iron Ores or Particles of Iron from Other Subv stances; and I dohereby declare that the fol- .-lowihg is a full, clear, and exact description whichp I g Figure 1 is a side elevatlon.

cles of iron ormagnetic-iron ore from other magnetic particles from ores, mill-s'weepings,

- move them.

- straight bars magnetic, having their ends with their points shall project to theoutside of the UNITED STATES P TENT OFFICE,

oHN' Y, SMITH, omm w PENNSYLVANIA;

IMPROVEMENT,IN=MACHINES FOR SEPARATING MAGNETIC-IRON OR ES FROM-OTHER SUBSTANCES.

Specification forming part of Letters Patent No. 109,354, dated November 15, 1570.

To all whom it may-concern:

Be it known that 1, JOHN Y. SMITH, of Pit-ts' Pennsylvania, have invented certain Improve ments in Machines for Separating Magneticthereof, reference being bad to the annexed drawing making part of this specification, in

Figure 2 is a bottom view. Figure 3 is a perspective view of the mag nets as arranged. t l p The same letters are used in all the figures to designate identical parts.

My improvementsrelate to machines in which magnets are used for'separating partisubstances not magnetic.

My machine may be'usedfor separating clay, or other combinations in which they may be found and from whichit is desirable to re- In theannexed drawingi A A are magnets, which may be either U- magnets, permanent or electro-magnetlc, or

a different polarity. These magnets I prefer to form and arrange across the belt, substan tially'as shown'in fig. 3, to present a greater surface for action on the ore or other particles subject to magnetic action. v

These magnets are placed in an endless belt, A, carried around two drums, B B, so that "belt, and theygare so arranged that, as; they stand on the endless belt, they shall, w1th the revolution of the belt and magnets carried by it, present alternately, as they pass, a north and asouth pole to the ore or other magnetic particles to be carried or incline G.

This apron or'incline may be constructed of brass, zinc, or other metal or material which on the metallic apron will transmit the magnetic force through it, j

but without becoming itself magnetic. It should be. arrangedysnbstantially as shown, above the magnets, and to avoid friction and consequent wear I prefer that-the apron shall n t touch the points of the magnets.

- The'holpper D isarranged todischargethe ore or ot er material upon the apronO, substantially as shown,

The portion of the apron O which is above the magnets should be roughened or covered by a woven fabric, to prevent the ore slipping on its surface, as it would do if the surface was polished: r

The ore orother substance containing particles of iron or magnetic-iron ore should be powdered or reducedto a granular form.

lows:

. the particles of iron or, magnetic-iron ore falls upon the apron G from the hopper, the part-i cles-facte'd upon by magnetic influence will stand upon 'the'apron G in position perpendicular to the face of the magnet-sand the upper and lowere'ndsof the particles will-have different polarity,. according to the polarity of the magnet immediately below them.

Asa magnet of different polarity approaches with the revolution of the endless belt A carriedby the drumsB B, (revolved by any convenient power,) the'magnetic force of the mag- 'net or arm of magnet, coming into action, :will act upon 'themagnetized particle, and

cause itto fall toward such magnet, and,when the magnet passes under it, reassume a vertical position, with a reversed polarity. g .l ,v j ,In revolving the particle will move towar the approaching magnet, and as the magnets or arms of magnets thus successive y approachr and pass ,under' the particles they will roll up the incline, and be discharged at one end of themachinewh-ile the non-magnetic particles,

not being subject to the action of the magnets, will slide down the incline, and be discharged at the opposite end of the machine.-

The apron .C may be hinged at the upper end, and be made to operate by a knocker or shaker, to expedite the discharge of the nonmagnetic particles.

The ore remaining on the apron (3 will form a keeper toretainthe magnetic strength of the upper magnetswhcn the machine is at rest.

An iron plate, E, attached, to the frame, is arranged to touch the points of the magnets in the belt not under the apron, and serve as a keeper, by connectingthe poles of the magnets. .As the points of the magnets across the belt touch'the next in series, it will be s'uffi- The operation of the machine will be as folcient that the keeperE shall touch the points of the outer row.

The arrangement of magnets herein shown on an endless belt carried around two drums, B B, may be adapted to my improved magnetic separator, as heretofore patented, with this advantage, that by extending the surface on which the magnet-scarry the ore underneath, the work of separation may be more fully performed.

What I claim as my invention, to secure by Letters Patent, is-

1. lhe endless belt of magnets carried upon drums or pulleys, arranged substantiallyas set forth. v

2. In combination with revolving magnets, an apron, O, on which the separation occurs, substantially as set forth.

and desire l 3. The'arraugement-of themagnets with reversed poles in succession,

forth.

4. In combination withmagnets arranged substantially as set forth, a keeper, 'E, at-- tached to the frame, to form a permanent connection between the poles of the'magnets not in action on the ore. v e

5. The apron 0, having its upper surface roughened, substantially as set forth.

to this specification in the presence of two subscribing witnesses. v JOHN Y. 'sMrr \Vitnesses:

R. MAsoN, B. EnW. J. EILSQ substantially'as'set In testimony whereof I have signed my name 

